C# openfiledialog this file is in use

Opens the file selected by the user, with read-only permission. The file is specified by the FileName property. Defines the owner window procedure that is overridden to add specific functionality to a common dialog box.

Occurs when the component is disposed by a call to the Dispose method. Occurs when the user clicks on the Open or Save button on a file dialog box. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode.

Please rate your experience Yes No. Any additional feedback? Namespace: System. Forms Assembly: System. In this article. Inherited from FileDialog. Gets a value indicating whether the component can raise an event. Inherited from Component. Gets or sets the default file name extension.

Gets or sets a string containing the file name selected in the file dialog box. Gets the file names of all selected files in the dialog box. Gets or sets the index of the filter currently selected in the file dialog box. Gets or sets the initial directory displayed by the file dialog box.

Gets the Win32 instance handle for the application. Gets or sets a value indicating whether the dialog box allows multiple files to be selected. Gets or sets a value indicating whether the read-only check box is selected. Gets or sets a value indicating whether the dialog box contains a read-only check box.

Gets or sets an object that contains data about the control. Inherited from CommonDialog. Gets or sets the file dialog box title. Gets or sets a value indicating whether the dialog box accepts only valid Win32 file names. CreateObjRef Type.

Inherited from MarshalByRefObject. Dispose Boolean. Equals Object. Active 6 years, 4 months ago. Viewed times. You should close the file before proceeding with that.. Read this link may help [Selecting files][1] [1]: stackoverflow.

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And When you accept the dialog, the code will read in that file and print its size in bytes. C program that reads in file from OpenFileDialog.

The OpenFileDialog control in Windows Forms has many properties that you can set directly in the designer. You do not need to assign them in your own C code. AddExtension You can change this to False from its default True if you want to automatically fix file extension problems. DefaultExt Set this to a string extension for files to automatically add that extension.

This is not often useful. DereferenceLinks This tells Windows to resolve shortcuts aliases on the system before returning the paths. FileName You can initialize this in the designer to a preset file name. This is changed to be the name the user specifies. InitialDirectory Specify a string to use that folder as the starting point. Try using Environment. SpecialFolder with this property. Multiselect Specifies if multiple files can be selected at once in the dialog.